Wrench



A.IH. SNYYDER AND A. KOWAL.

WRENCH.

APPLICATION FILED MAR. 19, I920.

Patented Mar. 15, 1921.

R x f 2% W 0 17H,S77 f? UNITED STATES PATENT OFFICE.

' WRENCH.

' Specification of Letters Patent. Patented llitl. 15, 1921.

Application filed llarch 19, 192 0. Seria1 No. 367.119.

To all whom it may concern: 7

Be it known thatwaAnrnon H. SNYDER, and ALEXANDER KowAL, citizens of the United States residing at Los Angeles, in.

has for its object to provide an improvedquick adjustable monkey wrench and further to provide for the precise adjustment of the jaws relative to each other as a prelimlnary character adjustment has been made and the 'invention consists of the construction, the combination, and in details and arrangements of the parts, an embodiment of which invention is illustrated in the accompanying drawings and described and claimed hereinafter.

Figure 1 is a side elevation of the 1mproved wrench partly in section.

Fig. 2 is aside elevation showlng the parts set in the jaw locking positlon.

Fig. 3 is a plan view of one edge of the wrench.

Fig. 4 is'a cross-section on line 4-4 of Fig. r

Fig. 5 is a cross-section on line 5-5 of Fig. 2.

Fig. 6 is a cross-section on line 6-6 of Fig. 1.

The improved wrench comprises a pair of jaws 2 and 3 the latter having a pair of parallel guide bars 4 and 5 extending perpendicularly to the operatlve face of the jaw 3 and on which bars the jaw 2 is slidably mounted in the plane of the body of the jaw 3 and the rods 4-5. The opposite ends of the rods 4-5 are secured in or formed on a tubular handle 6 of convenient proportions to be grasped in one hand. Arranged medially between the parallel rods 4-5 is a longitudinally movable screw-threaded bar or rod 7 extending into the chamber of the handle 6 which later is perforated from side to side as at 8, Fig. 2, to receive a knurled nut 9 through which the adjacent part of the rod 7 passes and by turning the nut 9 it will 'shift the screw-rod 7 longitudinally.

As clearly shown in Figs. 1 and 2 diametrically opposite sides of the screw-rod 7 are flattened so as to remove portions of the threads from end to end of the rod and a nut 10, Fig. 5, withanon-circular aperture 1l;is applied to the rod so-that the latter can be rotated about the axis at any time as may be desired. While the aperture 11 of the nut 10 is shown as non-circular it may be locked against rotation on the screw in any suitable manner so long as the desired capacity of rotation of'the rod is secured by means of the nut 10.

On one side of the device or nut 10 there is provided a shoulder or pin 12 disposed adjacent to a complementary fixed part as a stop plate 13 mounted on the handle or lever forming parts 4-5 or the part 6. The nut or part 10 is seated against axial movement between notches 14: in the rods 4-5 and the nut 10 may be turned through an angle of about 90 from the position with the pin 12 engaging a seat 13 in the member 13, at which time the flat faces of the screw 7 are presented toward the side rods 4-5, to a position in which the part 12 engages a seat 13 When the pin is in this position the threaded sides of the screw 7 are presented toward the rods 1-5.

The sliding jaw 2 is provided with an aperture 2 extending from one longitudinal edge or face to the opposite end medially between the side face of the member 2. This aperture is provided on diametrically opposite faces with teeth 2 so as to mesh with the teeth of the rod 7 when the rod is set in the position shown in Fig. 1 but when the rod is turned to the position shown in Fig. 2 the threads of the rod disengage thread 2 of the jaw aperture 2 this aperture being enlarged on opposite sides, at 90 from the threaded sides by the removal of the threads so as to clear the threads of the rod and enable the jaw 2 to be freely shifted on its supporting rods 45.

In the operation of the device the tool is placed with its jaws 2-3 about the part to be engaged and the jaw 2 is released from the threaded rod 7 by turning the rod with the wheel 10 to disconnect the threads of the rod from the threads 2- of the jaw. The jaw 2 is then shifted toward the embraced object and the wheel 10 turned to lock the threads of the rod and the nut together, and if necessary subsequent movement of the jaw 2 can be secured by rotating the nut 9 which causes the screw 7 to shift through the part 10.

Various changes may be made without departing from the spirit of our inventionis claimed.

What is claimed is: r v

A wrench comprising a hollow handle having parallel guides projecting beyond the same; a j aw fixedupon said guides, a second jaw slidable along said guides, a threaded rodextending longitudinally through said slidable jaw between said guidesand into said hollow handle, said rod having its threads interrupted longitudinally, the sliding jaw having a bore with interrupted threads to take the threaded rod, a wheel upon said rod journaled between said 15 guides and arranged to cause axially shiftable turning of said rod, a-second wheel threaded 'upon said rod and journaled within said hollow handle, said handle having openings through which the periphery of 20 said second wheel extends.

In testimony whereof we have signed our names to this specification.

ARTHUR H. SNYDER. ALEXANDER- KOWAL. 

